Vegetable dye preparation system with solar trough collector as heat source

The invention relates to the technical field of solar groove collectors, in particular to a vegetable dye preparation system with a solar trough collector as a heat source and a development method thereof. The vegetable dye preparation system comprises a stewing system and a drying system. The stewing system comprises the solar trough collector, a stewing kettle, a concentration kettle, a condensing tower, a nitrogen sealing device, a heat accumulating oil tank, an expansion tank and a dye manufacturing control system. The solar trough collector provides the heat source for the stewing kettleand the condensation kettle. According to a light condensation type medium temperature solar heat collector manufacturing process and integration technology for dye preparation, the temperature of a heat collector outlet can reach 150 DEG C, the heat energy temperature need in the dye preparation process can be met, the heat collecting efficiency reaches 45%, and the preparation effect is remarkable; and safety and reliab